I/O control, BIOS and DOS interrupts,OS/2, Video and color graphics control, Text display. This book is intended to be used in an assembly language programming class taught in a university or community college, it is written in a tutorial style and can be read by anyone who wants to learn about the IBM PC and how to get the most out of it. Instructors will find the topics covered in a pedagogical fashion with numerous examples and exercises. It is not necessary to have prior knowledge of computer hardware or programming to read this book,